Regulation of Minister of Energy and Mineral Resources No. 17/2014 is the fourth revision of tariffs for geothermal power projects. With the three previous revisions, the Government has moved from a regime that applied different tariffs depending on voltage or capacity, to one that applied different rates depending on location, to one based on the geothermal tariff on PLN's cost of electricity procurement, to a single tariff ceiling applicable for all projects.

This recent revision reverts to a geographically based tariff regime; however this time enhanced with an added dimension of the timing of achieving Commercial Operation Date - i.e., the tariff ceiling will increase for projects having a more distant planned Commercial Operation Date (to cater for the effects of inflation).